/**
 *  OpenKM, Open Document Management System (http://www.openkm.com)
 *  Copyright (c) 2006-2012  Paco Avila & Josep Llort
 *
 *  No bytes were intentionally harmed during the development of this application.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *  
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

package com.openkm.core;

/**
 * @see http://stackoverflow.com/questions/1068760/can-i-pass-parameters-by-reference-in-java
 * @author pavila
 */
public class Ref<T> {
	private T value;

	public Ref(T value) {
		this.value = value;
	}

	public T get() {
		return value;
	}

	public void set(T anotherValue) {
		value = anotherValue;
	}

	@Override
	public String toString() {
		return value == null ? "null": value.toString();
	}

	@Override
	public boolean equals(Object obj) {
		if (value == null) {
			return obj == null;
		}
		
		return value.equals(obj);
	}

	@Override
	public int hashCode() {
		return value == null ? 0 : value.hashCode();
	}
}
